Table 3. Effects of TDN level of commercial concentrates on plasma metabolite concentrations of late fattening Hanwoo steers

Items	Initial						Final
	T1	T2	T3	T4	SEM	Pr>F	T1	T2	T3	T4	SEM	Pr>F
ALB (g/dL)	3.85	3.68	3.75	3.71	0.020	0.13	4.23	3.31	4.81	3.85	0.049	0.19
ALT (IU/L)	17.70	18.78	18.03	18.19	0.360	0.25	19.31	23.06	17.88	20.87	0.533	0.32
BUN (mg/dL)	12.32	10.88	13.21	11.02	0.181	0.19	13.69	8.15	20.75	11.53	0.497	0.25
Ca (mg/dL)	8.88	8.67	8.88	8.82	0.026	0.42	9.48	7.89	10.96	8.89	0.093	0.42
CHO (mg/dL)	127.93	126.87	136.09	126.67	1.892	0.63	131.37	127.67	151.33	132.61	2.923	0.58
GGT (mg/dL)	37.39b	21.95a	32.28	35.93b	0.627	0.05	42.813	62.64	23.10	60.43	2.115	0.22
GLU (mg/dL)	64.00	61.47	68.74	63.77	0.438	0.36	83.73bc	137.62 a	121.89 ab	75.88bc	1.979	0.03
Mg (mg/dL)	3.23	3.32	3.20	3.24	0.015	0.18	3.57	2.99	3.98	3.25	0.036	0.08
NEFA (uEq/L)	149.18	121.69	150.30	164.51	2.542	0.22	251.35	119.71	291.49	176.29	7.201	0.15
P (mg/dL)	6.31	6.70	6.80	6.67	0.042	0.85	7.38	6.23	8.56	7.06	0.077	0.37
TG (mg/dL)	24.38	32.41	32.74	24.31	0.741	0.46	61.86	68.87	43.19	67.92	1.530	0.52
TP(g/dL)	7.26	7.30	7.14	7.05	0.042	0.33	7.98ab	6.05c	9.65a	7.24bc	0.086	0.01

Means with difference superscript in the same row are significantly different(p<0.05).
TDN, total digestible nutrients; ALB, albumin; ALT, alanine aminotransferase; BUN, blood urea nitrogen; Ca, calcium; CHO, cholesterol; GGT, gamma glutamyl transferase; GLU, glucose; Mg, magnesium; NEFA, non-esterified fatty acid; P, phosphorus; TG, triglyceride; TP, total protein.